EP3625088A1 - Retractable aerodynamic underbody flap with force absorption by the lower support - Google Patents

Retractable aerodynamic underbody flap with force absorption by the lower support

Info

Publication number
EP3625088A1
EP3625088A1 EP18728446.8A EP18728446A EP3625088A1 EP 3625088 A1 EP3625088 A1 EP 3625088A1 EP 18728446 A EP18728446 A EP 18728446A EP 3625088 A1 EP3625088 A1 EP 3625088A1
Authority
EP
European Patent Office
Prior art keywords
motor vehicle
axis
flap
vehicle according
aerodynamic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18728446.8A
Other languages
German (de)
French (fr)
Other versions
EP3625088B1 (en
Inventor
Gérald Andre
Stéphane Ginja
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plastic Omnium SE
Original Assignee
Plastic Omnium SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plastic Omnium SE filed Critical Plastic Omnium SE
Publication of EP3625088A1 publication Critical patent/EP3625088A1/en
Application granted granted Critical
Publication of EP3625088B1 publication Critical patent/EP3625088B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/04—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement
    • B60R19/12—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement vertically spaced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • B62D35/005—Front spoilers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • B62D35/02—Streamlining the undersurfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
    • B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/82—Elements for improving aerodynamics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

  • the invention relates to the front part of motor vehicles, and more particularly to the arrangement of the various members present in this part in order to improve the resistance of the vehicle to frontal impacts.
  • the design of the front part makes use of numerous tests, and complex calculations to prefigure the state of the vehicle after a shock.
  • the shock is important, the controlled deformation of the front of the vehicle is intended to preserve the lives of passengers transported.
  • the designers then arrange to absorb the energy by allowing the deformation of certain organs well. identified in order to reduce the consequences of an impact on a user of the external road to the vehicle such as a pedestrian and, on the other hand, to minimize the cost of repairing the vehicle.
  • These protection members may comprise a curved beam, fixed on the longitudinal longitudinal members of the vehicle through a deformation housing for absorbing a portion of the shock energy by deforming (crash box) and constituting the transverse way high.
  • the front bumper is mounted as a rule to dress the upper transverse track.
  • the technical units located in the front zone and constituting the front technical side are mounted on a frame itself fixed in general on the side members or, preferably, when the occupation of the space of the engine compartment must be optimized, on the front of the crash box or on the back of the beam constituting the upper part. In case of shock, the deformation of the crash box allows the safe recoil of the technical front.
  • a second curved transverse beam constituting the low transverse path, is fixed on the lower part of the bumper and reinforces the latter.
  • This lower part formed as a rule of a reinforced composite material or an injected thermoplastic, is designed to deform progressively up to a certain threshold before the upper transverse track and the deformation box do not start. same to deform. It therefore has the function of absorbing shocks first at low speeds, less than or equal to 15Km / h.
  • the low channel also has the function of absorbing part of the energy during the collision with the leg of a pedestrian before the high way is requested in turn.
  • the low transverse path can also be used to close the passage of air to the engine compartment.
  • a movable aerodynamic flap of under-basement disposed at the front of the vehicle to reduce and orient the flow of air passing under the vehicle.
  • This aerodynamic flap is articulated around a transverse axis held by bearings connected to a fixed part of the vehicle such as the chassis of the front technical front.
  • the aerodynamic flap of under-basing is rotated about its axis between an open position and a closed position by actuators, for example of the electric type.
  • the invention aims to take advantage of the proximity between the low transverse path and the components forming the aerodynamic flap to optimize the performance of the vehicle in case of frontal impact.
  • the motor vehicle according to the invention therefore comprises an aerodynamic flap of sub-bass articulated in rotation about a transverse axis and a low transverse path disposed at the rear of the lower part of a front bumper.
  • This vehicle is characterized in that the rear portion of the low transverse path comprises guide means for, in the event of a frontal impact, to orient the recoil of the low transverse path so that the rear face of the low transverse path comes in contact with the axis of the aerodynamic flap of under-basement.
  • the deformation of the low transverse track in the direction of the rear of the vehicle makes it possible to put the rear portion of the low transverse track in contact with the axis of the aerodynamic flap of sub-vehicle. basely.
  • This has the effect of benefiting the low transverse path of a resistance gain related to the combination of the structural strength of the low transverse path and the resistance of the axis of the aerodynamic flap of underbase.
  • the arrangement as described above reduces the resistance structural of the low transverse way in order to increase the progressivity of the deformation of said low transverse path at low energies. This arrangement thus reduces the physical damage caused to a pedestrian during a shock at low speed. It also makes it possible to increase the contribution of the low channel to the absorption of the energy of a shock involving the front face of the vehicle over its entire height.
  • the device according to the invention may also comprise in isolation, or in combination, the following characteristics:
  • the axis of rotation of the aerodynamic flap of under-basement is mounted on bearings fixed on the lower part of a frame of a technical front.
  • the chassis of the technical front panel is fixed on the rear part of a high transverse track.
  • the upper transverse track is attached to the front end of longitudinal beams through deformation housings.
  • the frame of the technical front side is arranged at a distance greater than
  • the chassis of the technical front panel is fixed directly to longitudinal beams.
  • the guide means are formed by one or more upper stirrups and one or more lower stirrups extending the lower path respectively above and below the axis of the aerodynamic flap of underbase.
  • the aerodynamic flap of under-basement has windows arranged close to the axis to allow the passage of the lower stirrups through the aerodynamic flap when said aerodynamic flap of under-basement is in the open position.
  • the lower stirrups and the upper stirrups are arranged transversely alternately.
  • the lower stirrups and the upper stirrups extend around the rear part of the axis of the aerodynamic flap of under-basement.
  • the aerodynamic flap of under-basement is made using a thermoplastic material.
  • the axis of the aerodynamic flap of under-basement comprises a reinforcing insert in the form of a rod of metal or composite material around which is molded the thermoplastic portion forming the aerodynamic flap of under-basement.
  • Figure 1 is a schematic representation in perspective of the front part of a vehicle.
  • Figure 2 is a schematic sectional view in a plane perpendicular to the transverse direction of the device forming the subject of the present invention.
  • Figure 3 is a schematic sectional view in a plane perpendicular to the transverse direction of an alternative embodiment of the invention.
  • Figure 4 is a schematic perspective view of the aerodynamic flap of underbase.
  • Figure 5 is a schematic perspective view of a first embodiment of the guide means of the low transverse path.
  • Figure 6 is a schematic perspective view of a second embodiment of the guide means of the low transverse path.
  • the direction OX oriented in the front direction of the vehicle is called longitudinal direction
  • the direction OY, oriented in the transverse direction of the vehicle is called transverse direction
  • the direction OZ, oriented from bottom to top is called vertical direction.
  • Figure 1 shows the main structural elements of the front part of a vehicle.
  • An upper curved transverse beam 3, commonly called upper transverse track is mounted via two deformation boxes 30 (crash box) at the front end of two longitudinal members 2 oriented in the longitudinal direction of the vehicle.
  • the bumper 6, shown in dashed line, is fixed on the front of the high transverse path 3.
  • FIG. 1 illustrates the case in which the vehicle comprises a sub-basement aerodynamic flap 1 pivoting about a transverse axis 10 between a closed position and an open position (shown in dashed lines).
  • the axis 10 of the aerodynamic flap of under-basing 1 is supported by bearings 11 mounted on the frame 5 (shown in dashed lines) of the technical front face, the members of which, such as a condenser, guide means, a radiator or a horn, have not been shown for the sake of clarity.
  • the bearings 11 are arranged as a rule at both lateral ends of the aerodynamic flap of underbase 1.
  • the aerodynamic flap of underbase and the axis 10 are made for example of thermoplastic material. To avoid the deformation of the flap 1 under the effects of aerodynamic forces it may be necessary to strengthen the axis 10 with a transverse insert 13 in the form of a rod made of metal or composite material around which is molded the thermoplastic part forming the flap itself.
  • the low transverse path 4 is fixed on the lower part of the bumper 6. It is observed here that the fastening elements of the low transverse path are independent of those of the fixing of the axis 10, so that the transverse path The bass must travel a certain distance of the order of several millimeters before coming into contact with the axis 10 of the aerodynamic flap of underbase 1. This arrangement makes it possible to avoid disturbing the rotational movement of the aerodynamic flap and to facilitate the accessibility of the fasteners by the operators working on the assembly lines.
  • the guide means are formed by upper stirrups 41 and lower 42 projecting towards the rear of the lower transverse path 4, and intended to grip the upper part and the lower part of the axis 10 of the aerodynamic flap of under-basing 1 so that in its recoil movement, the rear portion of the low transverse path 4 comes into contact with the front portion of the axis 10.
  • FIG. 2 also illustrates the case in which the chassis 5 of the technical front face is disposed at a distance d, in front of the longitudinal members 2.
  • This arrangement has the advantage of advancing the aerodynamic flap of sub-basement 1 closer to the bumper and the front of the vehicle, and improve the aerodynamic efficiency of the vehicle. It also allows to have a lower transverse path shorter and a smaller footprint.
  • this distance d is greater than a hundred millimeters, measured between two vertical planes perpendicular to the axis OX and passing respectively through the front end portion of the technical front face and the front end of the longitudinal longitudinal members 2.
  • the chassis 5 of the technical front panel can then be fixed optionally on the rear part of the upper transverse track 3 or on the deformation housing 30.
  • the frame 5 of the front technical side also moves back by avoiding damage to the bodies it supports.
  • Figure 3 illustrates the case, less favorable from an aerodynamic point of view, in which the frame 5 of the technical front face is fixed directly on the front of the longitudinal members 2.
  • the lower transverse path must then be longer or, as illustrated, must have elongated stirrups and a greater backward stroke to allow the deformation of the housing 30 to be delayed.
  • Figure 4 allows to view in more detail the aerodynamic flap of under-basement 1, in which windows 12 are formed on the part of the aerodynamic flap of under-basement 1 disposed near the axis 10. These windows 12 are intended to allow the passage of the lower stirrups 42 when the aerodynamic flap of sub-basement 1 pivots from the closed position to the open position.
  • Figure 5 illustrates in more detail the rear portion of the lower transverse path 4 on which are installed the upper stirrups 41 and the lower stirrups 42. It is observed that the upper and lower stirrups are not placed vis-à- screw each other, and are arranged transversely in an alternating order.
  • stirrups 41 and 42 are provided to be positioned around the only front portion of the axis 10. This first embodiment allows easy demolding of the low transverse path 4 when the latter is made of injected thermoplastic.
  • a second embodiment, illustrated in Figure 6, provides that the stirrups 41 and 42 extend around the rear portion of the axis 10.
  • this second embodiment allows a recovery by the low transverse path of the longitudinal forces undergone by the axis 10 when the flap 1 is in the open position and must oppose the deformations of the axis or flap generated by the aerodynamic forces when the vehicle is moving at great speed.
  • This provision may also make it possible to envisage a reduction in the rigidity of the axis of the aerodynamic flap of under-basement 1, so that when the aerodynamic flap of under-basing 1 is in the open position, said axis 10 can be slightly deformed to come into contact with the inner front part of the lower and upper stirrups.
  • the forms of collaboration between the axis 10 of the aerodynamic flap of under-basing 1 and the low transverse path 4 whose mechanical strengths add up in case of deformation of one or the other. other of these organs, can optimize the resistance of the vehicle under the action of a frontal impact, or under the action of the aerodynamic pressure when the vehicle is traveling at high speed.

Abstract

A motor vehicle comprising an aerodynamic underbody flap (1) hinged so as to be able to rotate about a transverse axis (10) and a lower transverse structure (4) arranged at the rear of the lower part of a front bumper (6). The rear part of the lower transverse structure (4) comprises guide means (41, 42) which, in the event of a frontal impact, guide the backward movement of the lower transverse structure (4) such that the rear face of the lower transverse structure (4) comes into contact with the axis (10) of the aerodynamic underbody flap (1).

Description

VOLET AERODYNAMIQUE DE SOUS-BASSEMENT RETRACTABLE AVEC REPRISE AERODYNAMIC COMPONENT OF RETRACTABLE SUBASSERMENT WITH RESUMPTION
D'EFFORT PAR L'APPUI BAS EFFORT BY LOW SUPPORT
[001] L'invention concerne la partie avant des véhicules automobiles, et plus particulièrement l'agencement des différents organes présents dans cette partie dans le but d'améliorer la résistance du véhicule aux chocs frontaux. [001] The invention relates to the front part of motor vehicles, and more particularly to the arrangement of the various members present in this part in order to improve the resistance of the vehicle to frontal impacts.
[002] La conception de la partie avant fait appel à de nombreux tests, et à des calculs complexes permettant de préfigurer l'état du véhicule après un choc. Lorsque le choc est important, la déformation contrôlée de l'avant du véhicule a pour objet de préserver la vie des passagers transportés. Toutefois, en dessous d'un certain seuil, lorsque l'on considère que le choc n'engage pas l'intégrité physique des occupants du véhicule, les concepteurs s'arrangent alors pour absorber l'énergie en autorisant la déformation de certains organes bien identifiés afin d'une part, de réduire les conséquences d'un impact sur un usager de la route externe au véhicule tel qu'un piéton et d'autre part, de minimiser les coûts de réparation du véhicule.  [002] The design of the front part makes use of numerous tests, and complex calculations to prefigure the state of the vehicle after a shock. When the shock is important, the controlled deformation of the front of the vehicle is intended to preserve the lives of passengers transported. However, below a certain threshold, when we consider that the shock does not engage the physical integrity of the occupants of the vehicle, the designers then arrange to absorb the energy by allowing the deformation of certain organs well. identified in order to reduce the consequences of an impact on a user of the external road to the vehicle such as a pedestrian and, on the other hand, to minimize the cost of repairing the vehicle.
[003] Ces organes de protection peuvent comprendre une poutre galbée, fixée sur les longerons longitudinaux du véhicule par l'intermédiaire d'un boîtier de déformation destiné à absorber une partie de l'énergie du choc en se déformant (crash box) et constituant la voie transversale haute. Le parechoc avant est monté en règle générale de manière à habiller la voie transversale haute.  [003] These protection members may comprise a curved beam, fixed on the longitudinal longitudinal members of the vehicle through a deformation housing for absorbing a portion of the shock energy by deforming (crash box) and constituting the transverse way high. The front bumper is mounted as a rule to dress the upper transverse track.
[004] Les organes techniques situés dans la zone frontale et constituant la face avant technique, sont montés sur un châssis lui-même fixé en règle générale sur les longerons ou, préférentiellement, lorsque l'occupation de l'espace du compartiment moteur doit être optimisée, sur l'avant de la crash box ou sur la face arrière de la poutre constituant la partie haute. En cas de choc, la déformation de la crash box permet le recul sans dommage de la face avant technique.  [004] The technical units located in the front zone and constituting the front technical side, are mounted on a frame itself fixed in general on the side members or, preferably, when the occupation of the space of the engine compartment must be optimized, on the front of the crash box or on the back of the beam constituting the upper part. In case of shock, the deformation of the crash box allows the safe recoil of the technical front.
[005] Une deuxième poutre transversale galbée, constituant la voie transversale basse, est fixée sur la partie inférieure du parechoc et permet de renforcer ce dernier. Cette partie basse, formée en règle générale d'un matériau composite armé ou d'un thermoplastique injecté, est conçue pour se déformer de manière progressive jusqu'à un certain seuil avant que la voie transversale haute et le boîtier de déformation ne commencent eux-mêmes à se déformer. Elle a donc pour fonction d'absorber en premier les chocs à des vitesses faibles, inférieures ou égales à 15Km/h.  [005] A second curved transverse beam, constituting the low transverse path, is fixed on the lower part of the bumper and reinforces the latter. This lower part, formed as a rule of a reinforced composite material or an injected thermoplastic, is designed to deform progressively up to a certain threshold before the upper transverse track and the deformation box do not start. same to deform. It therefore has the function of absorbing shocks first at low speeds, less than or equal to 15Km / h.
[006] La voie basse a également pour fonction d'absorber une partie de l'énergie lors du choc avec la jambe d'un piéton avant que la voie haute ne soit sollicitée à son tour. [006] The low channel also has the function of absorbing part of the energy during the collision with the leg of a pedestrian before the high way is requested in turn.
[007] La voie transversale basse peut également servir à fermer le passage de l'air vers le compartiment moteur.  [007] The low transverse path can also be used to close the passage of air to the engine compartment.
[008] Par ailleurs, afin de réduire la traînée aérodynamique des véhicules modernes, il peut être fait usage d'un volet aérodynamique mobile de sous-bassement disposé à l'avant du véhicule pour réduire et orienter le flux d'air passant sous le véhicule. Ce volet aérodynamique est articulé autour d'un axe transversal maintenu par des paliers reliés à une partie fixe du véhicule comme par exemple le châssis de la face avant technique. Le volet aérodynamique de sous-bassement est entraîné en rotation autour de son axe entre une position ouverte et une position fermée par des actionneurs, par exemple de type électrique.  [008] Moreover, in order to reduce the aerodynamic drag of modern vehicles, it can be made use of a movable aerodynamic flap of under-basement disposed at the front of the vehicle to reduce and orient the flow of air passing under the vehicle. This aerodynamic flap is articulated around a transverse axis held by bearings connected to a fixed part of the vehicle such as the chassis of the front technical front. The aerodynamic flap of under-basing is rotated about its axis between an open position and a closed position by actuators, for example of the electric type.
[009] L'ensemble formé par le volet aérodynamique de sous-bassement et son axe constitue alors un élément susceptible de participer à la résistance au choc du véhicule.  [009] The assembly formed by the aerodynamic flap of under-basement and its axis is then an element likely to participate in the impact resistance of the vehicle.
[0010] L'invention a pour objet de tirer parti de la proximité entre la voie transversale basse et les composants formant le volet aérodynamique pour optimiser la performance du véhicule en cas de choc frontal.  The invention aims to take advantage of the proximity between the low transverse path and the components forming the aerodynamic flap to optimize the performance of the vehicle in case of frontal impact.
[0011] Le véhicule automobile selon l'invention comprend donc un volet aérodynamique de sous-bassement articulé en rotation autour d'un axe transversal et une voie transversale basse disposée à l'arrière de la partie basse d'un parechoc avant.  The motor vehicle according to the invention therefore comprises an aerodynamic flap of sub-bass articulated in rotation about a transverse axis and a low transverse path disposed at the rear of the lower part of a front bumper.
[0012] Ce véhicule se caractérise en ce que la partie arrière de la voie transversale basse comporte des moyens de guidage pour, en cas de choc frontal, orienter le recul de la voie transversale basse de sorte que la face arrière de la voie transversale basse vienne en contact avec l'axe du volet aérodynamique de sous-bassement. This vehicle is characterized in that the rear portion of the low transverse path comprises guide means for, in the event of a frontal impact, to orient the recoil of the low transverse path so that the rear face of the low transverse path comes in contact with the axis of the aerodynamic flap of under-basement.
[0013] En cas de choc frontal à faible vitesse, la déformation de la voie transversale basse en direction de l'arrière du véhicule permet de mettre en contact la partie arrière de la voie transversale basse avec l'axe du volet aérodynamique de sous-bassement. Ceci a pour effet de faire bénéficier la voie transversale basse d'un gain de résistance lié à la combinaison de la résistance structurelle de la voie transversale basse et de la résistance de l'axe du volet aérodynamique de sous-bassement. On observera ici que, lorsque le volet aérodynamique de sous-bassement est en position fermée et prolonge l'axe dans un plan parallèle au sol, ce qui est le cas lorsque le véhicule circule à faible vitesse, l'inertie de l'axe, et donc la résistance de l'ensemble, est augmentée du voile constitué par le volet aérodynamique de sous-bassement lui-même.  In the event of a frontal impact at low speed, the deformation of the low transverse track in the direction of the rear of the vehicle makes it possible to put the rear portion of the low transverse track in contact with the axis of the aerodynamic flap of sub-vehicle. basely. This has the effect of benefiting the low transverse path of a resistance gain related to the combination of the structural strength of the low transverse path and the resistance of the axis of the aerodynamic flap of underbase. It will be observed here that when the aerodynamic flap of under-basement is in the closed position and extends the axis in a plane parallel to the ground, which is the case when the vehicle is traveling at low speed, the inertia of the axis, and therefore the resistance of the assembly, is increased by the veil constituted by the aerodynamic flap of under-basement itself.
[0014] L'arrangement tel que décrit ci-dessus, permet de réduire la résistance structurelle de la voie transversale basse afin d'augmenter la progressivité de la déformation de ladite voie transversale basse aux faibles énergies. Cette disposition permet ainsi de réduire les dommages physiques occasionnés à un piéton lors d'un choc à faible vitesse. Elle permet également d'augmenter la contribution de la voie basse à l'absorption de l'énergie d'un choc impliquant la face avant du véhicule sur toute sa hauteur. The arrangement as described above, reduces the resistance structural of the low transverse way in order to increase the progressivity of the deformation of said low transverse path at low energies. This arrangement thus reduces the physical damage caused to a pedestrian during a shock at low speed. It also makes it possible to increase the contribution of the low channel to the absorption of the energy of a shock involving the front face of the vehicle over its entire height.
[0015] Le dispositif selon l'invention peut aussi comprendre isolément, ou en combinaison, les caractéristiques suivantes :  The device according to the invention may also comprise in isolation, or in combination, the following characteristics:
L'axe de rotation du volet aérodynamique de sous-bassement est monté sur des paliers fixés sur la partie basse d'un châssis d'une face avant technique.  The axis of rotation of the aerodynamic flap of under-basement is mounted on bearings fixed on the lower part of a frame of a technical front.
Le châssis de la face avant technique est fixé sur la partie arrière d'une voie transversale haute.  The chassis of the technical front panel is fixed on the rear part of a high transverse track.
La voie transversale haute est fixée à l'extrémité avant de longerons longitudinaux par l'intermédiaire de boîtiers de déformation.  The upper transverse track is attached to the front end of longitudinal beams through deformation housings.
- Le châssis de la face avant technique est disposé à une distance supérieure à - The frame of the technical front side is arranged at a distance greater than
100mm de l'extrémité avant desdits longerons longitudinaux. 100mm from the front end of said longitudinal beams.
Le châssis de la face avant technique est fixé directement sur des longerons longitudinaux.  The chassis of the technical front panel is fixed directly to longitudinal beams.
Les moyens de guidage sont formés par un ou plusieurs étriers supérieurs et par un ou plusieurs étriers inférieurs prolongeant la voie basse respectivement au-dessus et au-dessous de l'axe du volet aérodynamique de sous-bassement.  The guide means are formed by one or more upper stirrups and one or more lower stirrups extending the lower path respectively above and below the axis of the aerodynamic flap of underbase.
Le volet aérodynamique de sous-bassement comporte des fenêtres disposées à proximité de l'axe pour autoriser le passage des étriers inférieurs à travers le volet aérodynamique lorsque ledit volet aérodynamique de sous-bassement est en position ouverte.  The aerodynamic flap of under-basement has windows arranged close to the axis to allow the passage of the lower stirrups through the aerodynamic flap when said aerodynamic flap of under-basement is in the open position.
Les étriers inférieurs et les étriers supérieurs sont disposés transversalement de manière alternée.  The lower stirrups and the upper stirrups are arranged transversely alternately.
Les étriers inférieurs et les étriers supérieurs se prolongent autour de la partie arrière de l'axe du volet aérodynamique de sous-bassement.  The lower stirrups and the upper stirrups extend around the rear part of the axis of the aerodynamic flap of under-basement.
- Le volet aérodynamique de sous-bassement est réalisé à l'aide d'un matériau thermoplastique.  - The aerodynamic flap of under-basement is made using a thermoplastic material.
L'axe du volet aérodynamique de sous-bassement comprend un insert de renforcement se présentant sous la forme d'une tige en métal ou en matériau composite autour duquel est moulée la partie thermoplastique formant le volet aérodynamique de sous-bassement. [0016] L'invention sera mieux comprise à la lecture des figures annexées, qui sont fournies à titre d'exemples et ne présentent aucun caractère limitatif, dans lesquelles : The axis of the aerodynamic flap of under-basement comprises a reinforcing insert in the form of a rod of metal or composite material around which is molded the thermoplastic portion forming the aerodynamic flap of under-basement. The invention will be better understood on reading the appended figures, which are provided by way of examples and are in no way limiting, in which:
La figure 1 est une représentation schématique en perspective de la partie avant d'un véhicule.  Figure 1 is a schematic representation in perspective of the front part of a vehicle.
La figure 2 est une vue en coupe schématique dans un plan perpendiculaire à la direction transversale du dispositif faisant l'objet de la présente invention.  Figure 2 is a schematic sectional view in a plane perpendicular to the transverse direction of the device forming the subject of the present invention.
La figure 3 est une vue en coupe schématique dans un plan perpendiculaire à la direction transversale d'une alternative de réalisation de l'invention.  Figure 3 is a schematic sectional view in a plane perpendicular to the transverse direction of an alternative embodiment of the invention.
La figure 4 est une vue schématique en perspective du volet aérodynamique de sous-bassement.  Figure 4 is a schematic perspective view of the aerodynamic flap of underbase.
La figure 5 est une vue schématique en perspective d'une première forme de réalisation des moyens de guidage de la voie transversale basse.  Figure 5 is a schematic perspective view of a first embodiment of the guide means of the low transverse path.
La figure 6 est une vue schématique en perspective d'une seconde forme de réalisation des moyens de guidage de la voie transversale basse.  Figure 6 is a schematic perspective view of a second embodiment of the guide means of the low transverse path.
[0017] Dans ce qui suit, dans le repère orthonormé OXYZ, la direction OX orientée selon la direction avant du véhicule est dénommée direction longitudinale, la direction OY, orientée selon la direction transversale du véhicule est dénommée direction transversale, et la direction OZ, orientée du bas vers le haut, est dénommée direction verticale.  In the following, in the orthonormal coordinate system OXYZ, the direction OX oriented in the front direction of the vehicle is called longitudinal direction, the direction OY, oriented in the transverse direction of the vehicle is called transverse direction, and the direction OZ, oriented from bottom to top, is called vertical direction.
[0018] La figure 1 permet de visualiser les principaux éléments structurels de la partie avant d'un véhicule. [0018] Figure 1 shows the main structural elements of the front part of a vehicle.
[0019] Une poutre transversale galbée supérieure 3, communément dénommée voie transversale haute est montée par l'intermédiaire de deux boîtiers de déformation 30 (crash box) à l'extrémité avant de deux longerons 2 orientés selon la direction longitudinale du véhicule. An upper curved transverse beam 3, commonly called upper transverse track is mounted via two deformation boxes 30 (crash box) at the front end of two longitudinal members 2 oriented in the longitudinal direction of the vehicle.
[0020] Le parechoc 6, représenté en ligne pointillée, est fixé sur l'avant de la voie transversale haute 3.  The bumper 6, shown in dashed line, is fixed on the front of the high transverse path 3.
[0021] La partie basse du parechoc 6 dissimule une poutre transversale 4, communément désignée sous l'appellation de voie transversale basse.. Comme cela a déjà été évoqué, cette voie transversale basse 4 a pour objet de renforcer la partie basse du parechoc 6 et de limiter sa déformation en cas de choc à faible vitesse. [0022] La figure 2 illustre le cas dans lequel le véhicule comprend un volet aérodynamique de sous-bassement 1 pivotant autour d'un axe transversal 10 entre une position fermée et une position ouverte (représentée en pointillés). L'axe 10 du volet aérodynamique de sous-bassement 1 est supporté par des paliers 11 montés sur le châssis 5 (représenté en pointillés) de la face avant technique dont les organes, tels qu'un condenseur, des moyens de guidage, un radiateur ou un avertisseur sonore, n'ont pas été représentés par souci de clarté. The lower part of the bumper 6 conceals a transverse beam 4, commonly referred to as a low transverse path .. As already mentioned, this low transverse path 4 is intended to strengthen the lower part of the bumper 6 and to limit its deformation in case of shock at low speed. [0022] Figure 2 illustrates the case in which the vehicle comprises a sub-basement aerodynamic flap 1 pivoting about a transverse axis 10 between a closed position and an open position (shown in dashed lines). The axis 10 of the aerodynamic flap of under-basing 1 is supported by bearings 11 mounted on the frame 5 (shown in dashed lines) of the technical front face, the members of which, such as a condenser, guide means, a radiator or a horn, have not been shown for the sake of clarity.
[0023] Les paliers 11 sont disposés en règle générale aux deux extrémités latérales du volet aérodynamique de sous-bassement 1 . Le volet aérodynamique de sous- bassement ainsi que l'axe 10 sont réalisés par exemple en matière thermoplastique. Pour éviter la déformation du volet 1 sous les effets des forces aérodynamique il peut s'avérer nécessaire de renforcer l'axe 10 à l'aide d'un insert transversal 13 se présentant sous la forme d'une tige en métal ou en matériau composite autour de laquelle est moulée la partie thermoplastique formant le volet proprement dit.  The bearings 11 are arranged as a rule at both lateral ends of the aerodynamic flap of underbase 1. The aerodynamic flap of underbase and the axis 10 are made for example of thermoplastic material. To avoid the deformation of the flap 1 under the effects of aerodynamic forces it may be necessary to strengthen the axis 10 with a transverse insert 13 in the form of a rod made of metal or composite material around which is molded the thermoplastic part forming the flap itself.
[0024] La voie transversale basse 4 est fixée sur la partie basse du parechoc 6. On observe ici que les éléments de fixation de la voie transversale basse sont indépendants de ceux de la fixation de l'axe 10, de sorte que la voie transversale basse doit parcourir une certaine distance de l'ordre de plusieurs millimètres avant de venir en contact avec l'axe 10 du volet aérodynamique de sous-bassement 1 . Cet arrangement permet d'éviter de perturber le mouvement de rotation du volet aérodynamique et de faciliter l'accessibilité des éléments de fixation par les opérateurs œuvrant sur les lignes de montage. The low transverse path 4 is fixed on the lower part of the bumper 6. It is observed here that the fastening elements of the low transverse path are independent of those of the fixing of the axis 10, so that the transverse path The bass must travel a certain distance of the order of several millimeters before coming into contact with the axis 10 of the aerodynamic flap of underbase 1. This arrangement makes it possible to avoid disturbing the rotational movement of the aerodynamic flap and to facilitate the accessibility of the fasteners by the operators working on the assembly lines.
[0025] Les moyens de guidage sont formés par des étriers supérieurs 41 et inférieurs 42 se projetant vers l'arrière de la voie transversale basse 4, et destinés à venir enserrer la partie supérieure et la partie inférieure de l'axe 10 du volet aérodynamique de sous- bassement 1 de sorte que dans son mouvement de recul, la partie arrière de la voie transversale basse 4 vienne en contact avec la partie avant de l'axe 10.  The guide means are formed by upper stirrups 41 and lower 42 projecting towards the rear of the lower transverse path 4, and intended to grip the upper part and the lower part of the axis 10 of the aerodynamic flap of under-basing 1 so that in its recoil movement, the rear portion of the low transverse path 4 comes into contact with the front portion of the axis 10.
[0026] La figure 2 permet également d'illustrer le cas dans lequel le châssis 5 de la face avant technique est disposé à une distance d, en avant des longerons 2.  FIG. 2 also illustrates the case in which the chassis 5 of the technical front face is disposed at a distance d, in front of the longitudinal members 2.
[0027] Cette disposition présente l'avantage d'avancer le volet aérodynamique de sous-bassement 1 au plus près du parechoc et de l'avant du véhicule, et d'améliorer l'efficacité aérodynamique du véhicule. Elle permet également de pouvoir disposer d'une voie transversale basse plus courte et d'un encombrement plus réduit. This arrangement has the advantage of advancing the aerodynamic flap of sub-basement 1 closer to the bumper and the front of the vehicle, and improve the aerodynamic efficiency of the vehicle. It also allows to have a lower transverse path shorter and a smaller footprint.
[0028] Idéalement, cette distance d est supérieure à une centaine de millimètres, mesurée entre deux plans verticaux perpendiculaires à l'axe OX et passant respectivement par la partie extrémale avant de la face avant technique et par l'extrémité avant des longerons longitudinaux 2. Ideally, this distance d is greater than a hundred millimeters, measured between two vertical planes perpendicular to the axis OX and passing respectively through the front end portion of the technical front face and the front end of the longitudinal longitudinal members 2.
[0029] Le châssis 5 de la face avant technique peut alors être fixé au choix sur la partie arrière de la voie transversale haute 3 ou encore sur le boîtier de déformation 30.  The chassis 5 of the technical front panel can then be fixed optionally on the rear part of the upper transverse track 3 or on the deformation housing 30.
[0030] En cas de choc frontal pouvant occasionner la déformation du boîtier 30, le châssis 5 de la face avant technique recule également en évitant de détériorer les organes qu'il supporte.  In the event of a frontal impact that may cause the deformation of the housing 30, the frame 5 of the front technical side also moves back by avoiding damage to the bodies it supports.
[0031] La figure 3 illustre le cas, moins favorable d'un point de vue aérodynamique, dans lequel le châssis 5 de la face avant technique est fixé directement sur l'avant des longerons 2. La voie transversale basse doit alors être plus longue ou, comme cela est illustré, doit disposer d'étriers allongés et d'une plus grande course de recul pour permettre de retarder la déformation du boîtier 30.  Figure 3 illustrates the case, less favorable from an aerodynamic point of view, in which the frame 5 of the technical front face is fixed directly on the front of the longitudinal members 2. The lower transverse path must then be longer or, as illustrated, must have elongated stirrups and a greater backward stroke to allow the deformation of the housing 30 to be delayed.
[0032] La figure 4 permet de visualiser plus en détail le volet aérodynamique de sous-bassement 1 , dans lequel des fenêtres 12 sont pratiquées sur la partie du volet aérodynamique de sous-bassement 1 disposée à proximité de l'axe 10. Ces fenêtres 12 ont pour objet d'autoriser le passage des étriers inférieurs 42 lorsque le volet aérodynamique de sous-bassement 1 pivote de la position fermée vers la position ouverte.  Figure 4 allows to view in more detail the aerodynamic flap of under-basement 1, in which windows 12 are formed on the part of the aerodynamic flap of under-basement 1 disposed near the axis 10. These windows 12 are intended to allow the passage of the lower stirrups 42 when the aerodynamic flap of sub-basement 1 pivots from the closed position to the open position.
[0033] La figure 5 illustre plus en détail la partie arrière de la voie transversale basse 4 sur laquelle sont installés les étriers supérieurs 41 et les étriers inférieurs 42. On observe que les étriers supérieurs et inférieurs ne sont pas placés en vis-à-vis les uns des autres, et sont disposés transversalement selon un ordre alterné. Figure 5 illustrates in more detail the rear portion of the lower transverse path 4 on which are installed the upper stirrups 41 and the lower stirrups 42. It is observed that the upper and lower stirrups are not placed vis-à- screw each other, and are arranged transversely in an alternating order.
[0034] Dans cette première forme de réalisation, les étriers 41 et 42 sont prévus pour se positionner autour de la seule partie avant de l'axe 10. Cette première forme de réalisation autorise un démoulage facilité de la voie transversale basse 4 lorsque cette dernière est réalisée en thermoplastique injecté.  In this first embodiment, the stirrups 41 and 42 are provided to be positioned around the only front portion of the axis 10. This first embodiment allows easy demolding of the low transverse path 4 when the latter is made of injected thermoplastic.
[0035] Une seconde forme de réalisation, illustrée à la figure 6, prévoit que les étriers 41 et 42 se prolongent autour de la partie arrière de l'axe 10. Bien que plus complexe à réaliser par moulage, cette seconde forme de réalisation autorise une reprise par la voie transversale basse des efforts longitudinaux subis par l'axe 10 lorsque le volet 1 est en position ouverte et doit s'opposer aux déformations de l'axe ou du volet engendrées par les forces aérodynamiques lorsque le véhicule se déplace à grande vitesse. Cette disposition peut également permettre d'envisager une diminution de la rigidité de l'axe du volet aérodynamique de sous-bassement 1 , de sorte que, lorsque le volet aérodynamique de sous-bassement 1 est en position ouverte, ledit axe 10 puisse se déformer légèrement pour venir en contact avec la partie interne avant des étriers inférieurs et supérieurs. A second embodiment, illustrated in Figure 6, provides that the stirrups 41 and 42 extend around the rear portion of the axis 10. Although more complex to achieve by molding, this second embodiment allows a recovery by the low transverse path of the longitudinal forces undergone by the axis 10 when the flap 1 is in the open position and must oppose the deformations of the axis or flap generated by the aerodynamic forces when the vehicle is moving at great speed. This provision may also make it possible to envisage a reduction in the rigidity of the axis of the aerodynamic flap of under-basement 1, so that when the aerodynamic flap of under-basing 1 is in the open position, said axis 10 can be slightly deformed to come into contact with the inner front part of the lower and upper stirrups.
[0036] Comme on peut le percevoir, les formes de collaboration entre l'axe 10 du volet aérodynamique de sous-bassement 1 et la voie transversale basse 4 dont les résistances mécaniques s'additionnent en cas de déformation de l'un ou de l'autre de ces organes, permettent d'optimiser la résistance du véhicule sous l'action d'un choc frontal, ou encore sous l'action de la pression aérodynamique lorsque le véhicule roule à grande vitesse.  As can be perceived, the forms of collaboration between the axis 10 of the aerodynamic flap of under-basing 1 and the low transverse path 4 whose mechanical strengths add up in case of deformation of one or the other. other of these organs, can optimize the resistance of the vehicle under the action of a frontal impact, or under the action of the aerodynamic pressure when the vehicle is traveling at high speed.
[0037] Cela est rendu possible par la présence des moyens de guidage qui orientent le mouvement de recul de la voie transversale basse 4. This is made possible by the presence of guiding means which guide the recoil movement of the low transverse path 4.
[0038] Aussi, les différentes formes de mise en œuvre de l'invention décrites ci- dessus, peuvent faire l'objet de nombreuses variantes sans pour autant se départir de l'esprit même de l'invention. Also, the various forms of implementation of the invention described above, may be subject to many variations without departing from the spirit of the invention.
NOMENCLATURE NOMENCLATURE
1 Volet aérodynamique de sous-bassement. 1 aerodynamic flap of under-basement.
10 Axe du volet aérodynamique de sous-bassement. 10 Axis of the aerodynamic flap of under-basement.
11 Palier de l'axe du volet aérodynamique de sous-bassement.  11 Bearing of the axis of the aerodynamic flap of under-basement.
12 Fenêtre.  12 Window.
13 Insert de renforcement de l'axe du volet aérodynamique de sous-bassement.  13 Reinforcement insert for the axis of the aerodynamic flap of under-basement.
2 Longeron longitudinal.  2 longitudinal beam.
3 Voie transversale haute. 3 High transverse way.
30 Boîtier de déformation (crash box).  30 Crash box.
31 Boulons de fixation.  31 Fastening bolts.
4 Voie transversale basse.  4 Low transverse way.
41 Etrier supérieur. 41 Upper stirrup.
42 Etrier inférieur. 42 Lower stirrup.
5 Châssis de la face avant technique.  5 Chassis of the technical front panel.
6 Parechoc.  6 Bumper.
P Plan de coupe.  P Cutting plane.
d Distance entre la partie extrémale avant du châssis de la face avant technique et l'avant du longeron longitudinal. d Distance between the front end portion of the technical front frame and the front of the longitudinal spar.

Claims

REVENDICATIONS
1 . Véhicule automobile comprenant un volet aérodynamique (1 ) de sous-bassement articulé en rotation autour d'un axe transversal (10) et une voie transversale basse (4) disposée à l'arrière de la partie basse d'un parechoc (6) avant caractérisé en ce que la partie arrière de la voie transversale basse (4) comporte des moyens de guidage (41 , 42) pour, en cas de choc frontal, orienter le recul de la voie transversale basse (4) de sorte que la face arrière de la voie transversale basse (4) vienne en contact avec l'axe (10) du volet aérodynamique de sous-bassement (1 ). 1. Motor vehicle comprising an aerodynamic flap (1) of underbill rotatably about a transverse axis (10) and a low transverse track (4) disposed at the rear of the lower part of a bumper (6) before characterized in that the rear portion of the low transverse track (4) comprises guide means (41, 42) for, in the event of a frontal impact, to orient the recoil of the low transverse track (4) so that the rear face the low transverse track (4) comes into contact with the axis (10) of the aerodynamic flap of underbase (1).
2. Véhicule automobile selon la revendication 1 , dans lequel l'axe de rotation (10) du volet aérodynamique de sous-bassement (1 ) est monté sur des paliers fixés sur la partie basse d'un châssis (5) d'une face avant technique. 2. Motor vehicle according to claim 1, wherein the axis of rotation (10) of the aerodynamic flap of under-basement (1) is mounted on bearings fixed on the lower part of a frame (5) of a face before technical.
3. Véhicule automobile selon la revendication 2, dans lequel le châssis (5) de la face avant technique est fixé sur la partie arrière d'une voie transversale haute (3).  3. Motor vehicle according to claim 2, wherein the frame (5) of the technical front face is fixed on the rear portion of a high transverse path (3).
4. Véhicule automobile selon la revendication 3, dans lequel la voie transversale haute (3) est fixée à l'extrémité avant de longerons longitudinaux (2) par l'intermédiaire de boîtiers de déformation (30). 4. Motor vehicle according to claim 3, wherein the upper transverse path (3) is fixed to the front end of longitudinal longitudinal members (2) via deformation housings (30).
5. Véhicule automobile selon la revendication 3 ou la revendication 4, dans lequel le châssis (5) de la face avant technique est disposé à une distance supérieure à 100mm de l'extrémité avant desdits longerons longitudinaux (2).  5. Motor vehicle according to claim 3 or claim 4, wherein the frame (5) of the technical front face is disposed at a distance greater than 100mm from the front end of said longitudinal longitudinal members (2).
6. Véhicule automobile selon la revendication 2, dans lequel le châssis (5) de la face avant technique est fixé directement sur des longerons longitudinaux (2).  6. Motor vehicle according to claim 2, wherein the frame (5) of the front technical face is fixed directly on longitudinal longitudinal members (2).
7. Véhicule automobile selon l'une quelconque des revendications précédentes, dans lequel les moyens de guidage (41 , 42) sont formés par un ou plusieurs étriers supérieurs (41 ) et par un ou plusieurs étriers inférieurs (42) prolongeant la voie basse respectivement au-dessus et au-dessous de l'axe (10) du volet aérodynamique de sous-bassement (1 ). 7. Motor vehicle according to any one of the preceding claims, wherein the guide means (41, 42) are formed by one or more upper stirrups (41) and by one or more lower stirrups (42) extending the lower path respectively above and below the axis (10) of the aerodynamic sub-basement flap (1).
8. Véhicule automobile selon la revendication 7, dans lequel le volet aérodynamique de sous-bassement (1 ) comporte des fenêtres (12) disposées à proximité de l'axe (10) pour autoriser le passage des étriers inférieurs à travers le volet (1 ) lorsque ledit volet aérodynamique de sous-bassement (1 ) est en position ouverte. 8. Motor vehicle according to claim 7, wherein the aerodynamic flap of under-basement (1) comprises windows (12) disposed near the axis (10) to allow the passage of the lower stirrups through the flap (1). ) when said aerodynamic flap of under-basement (1) is in the open position.
9. Véhicule automobile selon la revendication 7 ou la revendication 8, dans lequel les étriers inférieurs (42) et les étriers supérieurs (41 ) sont disposés transversalement de manière alternée. 9. Motor vehicle according to claim 7 or claim 8, wherein the lower stirrups (42) and the upper stirrups (41) are arranged transversely alternately.
10. Véhicule automobile selon l'une quelconque des revendications 7 à 9, dans lequel les étriers inférieurs (42) et les étriers supérieurs (41 ) se prolongent autour de la partie arrière de l'axe (10) du volet aérodynamique de sous-bassement (1 ). 10. Motor vehicle according to any one of claims 7 to 9, wherein the lower stirrups (42) and the upper stirrups (41) extend around the rear part of the axis (10) of the sub-aerodynamic flap. Basically (1).
1 1 . Véhicule automobile selon l'une quelconque des revendications précédentes dans lequel le volet aérodynamique de sous-bassement (1 ) est réalisé à l'aide d'un matériau thermoplastique.  1 1. Motor vehicle according to any one of the preceding claims wherein the aerodynamic flap of underbase (1) is made using a thermoplastic material.
12. Véhicule automobile selon la revendication 11 , dans lequel l'axe (10) du volet aérodynamique de sous-bassement comprend un insert de renforcement (13) se présentant sous la forme d'une tige en métal ou en matériau composite autour duquel est moulée la partie thermoplastique formant le volet aérodynamique de sous-bassement (1 ).  12. Motor vehicle according to claim 11, wherein the axis (10) of the aerodynamic flap of under-basing comprises a reinforcing insert (13) in the form of a rod made of metal or composite material around which is molded the thermoplastic part forming the aerodynamic flap of underbase (1).
EP18728446.8A 2017-05-16 2018-05-14 Retractable aerodynamic underbody flap with force absorption by the lower support Active EP3625088B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1754313A FR3066453B1 (en) 2017-05-16 2017-05-16 AERODYNAMIC COMPRESSOR OF RETRACTABLE SUBASSERMENT WITH RESUME OF EFFORT BY LOW SUPPORT
PCT/FR2018/051166 WO2018211206A1 (en) 2017-05-16 2018-05-14 Retractable aerodynamic underbody flap with force absorption by the lower support

Publications (2)

Publication Number Publication Date
EP3625088A1 true EP3625088A1 (en) 2020-03-25
EP3625088B1 EP3625088B1 (en) 2021-04-21

Family

ID=59325485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18728446.8A Active EP3625088B1 (en) 2017-05-16 2018-05-14 Retractable aerodynamic underbody flap with force absorption by the lower support

Country Status (5)

Country Link
US (1) US20220234531A1 (en)
EP (1) EP3625088B1 (en)
CN (1) CN111212762B (en)
FR (1) FR3066453B1 (en)
WO (1) WO2018211206A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113232615B (en) * 2021-06-18 2022-06-14 戴卡优艾希杰渤铝汽车零部件有限公司 Front anti-collision beam assembly of intelligent automobile

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904515B8 (en) * 1999-02-04 2008-06-26 Volkswagen Ag Device for cooling a temperature-loaded unit
FR2791628B1 (en) * 1999-03-29 2001-06-22 Peguform France COMBINATION OF A BUMPER SKIN AND AN ENGINE FAIRING FOR A VEHICLE
DE10137175A1 (en) * 2001-07-31 2003-02-27 Audi Ag Engine cover for a motor vehicle comprises adjusting devices adjusting the position of a closing element closing an aeration/ventilation opening and having an adjusting element made of a memory alloy for temperature-dependent adjustment
FR2864811B1 (en) * 2004-01-07 2008-08-22 Renault Sas IMPACT PROTECTION DEVICE FOR A MOTOR VEHICLE
JP2008137591A (en) * 2006-12-05 2008-06-19 Mazda Motor Corp Vehicular body front part structure
FR2927303A1 (en) * 2008-02-08 2009-08-14 Peugeot Citroen Automobiles Sa Drag and lift reduction device for motor vehicle, has stopper comprising elastic unit for exerting return effort that is lower than effort exerted on shutter by obstacle for providing movement of shutter towards folded position
DE102009034906A1 (en) * 2009-07-28 2011-02-03 GM Global Technology Operations, Inc., Detroit Front part for a motor vehicle body
WO2012012535A2 (en) * 2010-07-21 2012-01-26 Shape Corp. Integrated energy absorber and air flow management structure
US8702152B1 (en) * 2013-01-11 2014-04-22 Ford Global Technologies, Llc Deployable front air dam
US9517802B1 (en) * 2015-09-04 2016-12-13 GM Global Technology Operations LLC Active underbody deflector

Also Published As

Publication number Publication date
WO2018211206A1 (en) 2018-11-22
US20220234531A1 (en) 2022-07-28
CN111212762A (en) 2020-05-29
CN111212762B (en) 2023-04-14
FR3066453B1 (en) 2019-08-16
EP3625088B1 (en) 2021-04-21
FR3066453A1 (en) 2018-11-23

Similar Documents

Publication Publication Date Title
FR2887211A1 (en) Motor vehicle front part`s low area section, has connection device with sliding connection permitting movement of extension along longitudinal direction, and stud and pin for hindering movement of extension
EP1859983B1 (en) Front module of a motor vehicle that retracts in the event of a crash and corresponding motor vehicle.
EP1963139A2 (en) Energy absorption system for a motor vehicle
EP2930067A2 (en) Bumper beam for a vehicle, associated bumper assembly and vehicle
EP2135776B1 (en) Rear bumper for a commercial vehicle
WO2021122131A1 (en) Structure of a motor vehicle body rear part equipped with side members and longitudinal members
FR3011520A1 (en) SHOCK ABSORBER SYSTEM FOR MOTOR VEHICLE
FR3066453B1 (en) AERODYNAMIC COMPRESSOR OF RETRACTABLE SUBASSERMENT WITH RESUME OF EFFORT BY LOW SUPPORT
FR2842152A1 (en) Automobile bumper bar frame fixed to side frame comprises transverse beam and shock absorber element comprising block of shock absorber material interposed between beam and side frame
FR2837762A1 (en) BUMPER BEAM WITH ENERGY ABSORBER FOR MOTOR VEHICLE
FR2965226A1 (en) Air flow guiding device i.e. airguide, for use in front face of heat exchanger to guide air flow in motor vehicle, has jambs connecting upper and lower reinforcements to define frame, where reinforcements are provided with shock absorbers
EP1860020A1 (en) Front side of an automobile vehicle that can retract in the event of a crash and corresponding automobile vehicle.
WO2019063895A1 (en) Vehicle comprising a small-overlap frontal-impact absorption device
FR2857932A1 (en) Side rail for use in motor vehicle, has V shaped rigid part with central part that drives side rail to fold front part away from engine compartment with respect to rear part when rail is compressed longitudinally
EP3898304B1 (en) Motor vehicle comprising an engine support and a chassis
FR3066445A1 (en) DEVICE FOR CONTROLLING AN AIR FLOW OF AN AIR INTAKE FOR THE FRONT OF A VEHICLE
FR2992621A1 (en) MOTOR VEHICLE COMPRISING AN ADDITIONAL REINFORCEMENT PART CAPABLE OF GUIDING THE DEFORMATION OF THE CENTRAL PILLAR STRUCTURE IN THE EVENT OF LATERAL SHOCK
FR2980145A1 (en) Bumper beam e.g. rear bumper beam, for car, has two fastening units, where each fastening unit includes single-piece, honeycomb-structured, truncated cone-shaped shock absorber extending along longitudinal axis over entire length of unit
EP2210799A1 (en) Under-engine fairing assembly for a front structure of an automobile
FR3037552A1 (en) SUPPORT STRUCTURE FOR FRONT FACE MODULE OF VEHICLE AND FRONT PANEL MODULE COMPRISING SAID SUPPORT STRUCTURE
FR2958885A1 (en) Structure for integrating cooling module on body shell of motor vehicle to protect cooling module in event of impact, has sectile and pivot connection units arranged between cooling module and body shell of vehicle
FR2907715A1 (en) REAR OPENING OF MOTOR VEHICLE
WO2020174136A1 (en) Shock-absorbing device for an air intake shut-off module of a motor vehicle
FR3030428A1 (en) CRADLE OF A MOTOR VEHICLE
FR3017360A1 (en) AUTOMOBILE LONGERON WITH OBLIQUE STIFFENER FOR SHOCK WALL

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191127

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
RAV Requested validation state of the european patent: fee paid

Extension state: MA

Effective date: 20191127

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20201119

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018015905

Country of ref document: DE

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1384313

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210515

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1384313

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210421

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210721

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210823

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210721

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210722

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210821

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018015905

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210514

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20220124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210821

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20220514

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220514

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230517

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20180514

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230530

Year of fee payment: 6

Ref country code: DE

Payment date: 20230519

Year of fee payment: 6